X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Fsupport%2FFileName.h;h=f0d1b54748089290e20de80d149f0bc774769da6;hb=329eae5605d7bc40a53ebafa817470d9739ff632;hp=0b65eb1f2558f6d41db6f879f3ac1d87edf1449b;hpb=07719210df1ab7ae417b01ac7911762a8fe37227;p=lyx.git diff --git a/src/support/FileName.h b/src/support/FileName.h index 0b65eb1f25..f0d1b54748 100644 --- a/src/support/FileName.h +++ b/src/support/FileName.h @@ -12,9 +12,11 @@ #ifndef FILENAME_H #define FILENAME_H +#include "support/os.h" #include "support/strfwd.h" #include +#include namespace lyx { @@ -54,24 +56,47 @@ public: * \param filename the file in question. Must have an absolute path. * Encoding is always UTF-8. */ - virtual void set(std::string const & filename); - virtual void set(FileName const & fn, std::string const & suffix); + void set(std::string const & filename); + void set(FileName const & fn, std::string const & suffix); virtual void erase(); /// Is this filename empty? bool empty() const; /// Is the filename absolute? - bool isAbsolute() const; + static bool isAbsolute(std::string const & name); /// get the absolute file name in UTF-8 encoding - std::string absFilename() const; + std::string absFileName() const; + + /** returns an absolute pathname (whose resolution does not involve + * '.', '..', or symbolic links) in UTF-8 encoding + */ + std::string realPath() const; + /** * Get the file name in the encoding used by the file system. - * Only use this for accessing the file, e.g. with an fstream. + * Only use this for passing file names to external commands. + * Warning: On Windows this is not unicode safe and should not + * be used for accessing files with an fstream, for example. */ std::string toFilesystemEncoding() const; + /** + * Get the file name in a unicode safe encoding used by the file system. + * Only use this for accessing the file with standard I/O functions + * non explicitly unicode aware, e.g. with an fstream. This can also + * be used for passing file names to external commands, but only if + * you are sure that the stem of the name will not be used for + * producing derivative files. For example, don't use this for passing + * file names to LaTeX, as the stem of the .dvi file will not correspond + * to the stem of the .tex file anymore. + * Use os::CREATE if the file is to be accessed for writing. + */ + std::string toSafeFilesystemEncoding(os::file_access how = os::EXISTING) const; + /// returns true if the file exists bool exists() const; + /// refreshes the file info + void refresh() const; /// \return true if this object points to a symbolic link. bool isSymLink() const; /// \return true if the file is empty. @@ -80,7 +105,7 @@ public: std::time_t lastModified() const; /// generates a checksum of a file virtual unsigned long checksum() const; - /// return true when file is readable but not writabel + /// return true when file is readable but not writable bool isReadOnly() const; /// return true when it names a directory bool isDirectory() const; @@ -99,7 +124,9 @@ public: /// \return true when file/directory is writable (write test file) /// \warning This methods has different semantics when system level /// copy command, it will overwrite the \c target file if it exists, - bool copyTo(FileName const & target) const; + /// If \p keepsymlink is true, the copy will be written to the symlink + /// target. Otherwise, the symlink will be destroyed. + bool copyTo(FileName const & target, bool keepsymlink = false) const; /// remove pointed file. /// \return true on success. @@ -112,6 +139,8 @@ public: bool renameTo(FileName const & target) const; /// move pointed file to \param target. + /// If \p target exists it will be overwritten (if it is a symlink, + /// the symlink will be destroyed). /// \return true on success. bool moveTo(FileName const & target) const; @@ -145,23 +174,7 @@ public: */ void changeExtension(std::string const & extension); - /** Guess the file format name (as in Format::name()) from contents. - Normally you don't want to use this directly, but rather - Formats::getFormatFromFile(). - */ - std::string guessFormatFromContents() const; - - /// check for zipped file - bool isZippedFile() const; - static FileName fromFilesystemEncoding(std::string const & name); - /// (securely) create a temporary file with the given mask. - /// \p mask must be in filesystem encoding, if it contains a - /// relative path, the template file will be created in the global - /// temporary directory as given by 'package().temp_dir()'. - static FileName tempName(std::string const & mask = empty_string()); - static FileName tempName(FileName const & temp_dir, - std::string const & mask); /// get the current working directory static FileName getcwd(); @@ -170,10 +183,18 @@ public: /// filename without path std::string onlyFileName() const; - /// filename without path and without extension - std::string onlyFileNameWithoutExt() const; + /// filename without path and without extension + std::string onlyFileNameWithoutExt() const; + /// only extension after the last dot. + std::string extension() const; + /** checks if the file has the given extension + on Windows and Mac it compares case insensitive */ + bool hasExtension(const std::string & ext); /// path without file name FileName onlyPath() const; + /// path of parent directory + /// returns empty path for root directory + FileName parentPath() const; /// used for display in the Gui docstring displayName(int threshold = 1000) const; @@ -186,17 +207,31 @@ public: docstring const absoluteFilePath() const; private: - friend bool operator==(FileName const &, FileName const &); + friend bool equivalent(FileName const &, FileName const &); + /// Set for tracking of already visited file names. + /// Uses operator==() (which may be case insensitive), and not + /// equvalent(), so that symlinks are not resolved. + typedef std::set FileNameSet; + /// Helper for public copyTo() to find circular symlink chains + bool copyTo(FileName const &, bool, FileNameSet &) const; /// struct Private; Private * const d; }; +/// \return true if lhs and rhs represent the same file. E.g., +/// they might be hardlinks of one another. +bool equivalent(FileName const & lhs, FileName const & rhs); +/// \return true if the absolute path names are the same. bool operator==(FileName const &, FileName const &); +/// bool operator!=(FileName const &, FileName const &); +/// Lexically compares the absolute path names. bool operator<(FileName const &, FileName const &); +/// Lexically compares the absolute path names. bool operator>(FileName const &, FileName const &); +/// Writes the absolute path name to the stream. std::ostream & operator<<(std::ostream &, FileName const &); @@ -210,7 +245,7 @@ class DocFileName : public FileName { public: DocFileName(); /** \param abs_filename the file in question. Must have an absolute path. - * \param save_abs_path how is the file to be output to file? + * \param save_abs_path how is the filename to be output? */ DocFileName(std::string const & abs_filename, bool save_abs_path = true); DocFileName(FileName const & abs_filename, bool save_abs_path = true); @@ -220,15 +255,15 @@ public: * \param buffer_path if \c filename has a relative path, generate * the absolute path using this. */ - virtual void set(std::string const & filename, std::string const & buffer_path); - + void set(std::string const & filename, std::string const & buffer_path); + /// void erase(); - + /// bool saveAbsPath() const { return save_abs_path_; } /// \param buffer_path if empty, uses `pwd` - std::string relFilename(std::string const & buffer_path = empty_string()) const; + std::string relFileName(std::string const & buffer_path = empty_string()) const; /// \param buf_path if empty, uses `pwd` - std::string outputFilename(std::string const & buf_path = empty_string()) const; + std::string outputFileName(std::string const & buf_path = empty_string()) const; /** @returns a mangled representation of the absolute file name * suitable for use in the temp dir when, for example, converting @@ -251,23 +286,22 @@ public: * with @c dir. */ std::string - mangledFilename(std::string const & dir = empty_string()) const; + mangledFileName(std::string const & dir = empty_string()) const; - /// \return true if the file is compressed. - bool isZipped() const; /// \return the absolute file name without its .gz, .z, .Z extension - std::string unzippedFilename() const; + std::string unzippedFileName() const; private: + /// Records whether we should save (or export) the filename as a relative + /// or absolute path. bool save_abs_path_; - /// Cache for isZipped() because zippedFile() is expensive - mutable bool zipped_; - /// Is zipped_ valid? - mutable bool zipped_valid_; }; +/// \return true if these have the same absolute path name AND +/// if save_abs_path_ has the same value in both cases. bool operator==(DocFileName const &, DocFileName const &); +/// bool operator!=(DocFileName const &, DocFileName const &); } // namespace support